

package com.hazelcast.jet.impl.processor;

import com.hazelcast.function.BiFunctionEx;
import com.hazelcast.jet.core.AbstractProcessor;
import com.hazelcast.jet.pipeline.ServiceFactory;
import com.hazelcast.security.PermissionsUtil;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class AbstractTransformUsingServiceP<C, S> extends AbstractProcessor {

    protected final C serviceContext;
    protected final ServiceFactory<C, S> serviceFactory;

    // package-visible for test
    S service;

    public AbstractTransformUsingServiceP(@Nonnull ServiceFactory<C, S> serviceFactory, @Nullable C serviceContext) {
        this.serviceContext = serviceContext;
        this.serviceFactory = serviceFactory;
    }

    @Override
    protected void init(@Nonnull Context context) throws Exception {
        BiFunctionEx<? super Context, ? super C, ? extends S> serviceFn = serviceFactory.createServiceFn();
        PermissionsUtil.checkPermission(serviceFn, context);
        service = serviceFn.apply(context, serviceContext);
    }

    @Override
    public boolean isCooperative() {
        return serviceFactory.isCooperative();
    }

    @Override
    public void close() throws Exception {
        if (service != null) {
            serviceFactory.destroyServiceFn().accept(service);
        }
        service = null;
    }
}
